Drugs like cocaine and even marijuana and nicotine affect the brainâs natural function. The drug overwhelms the brain with a chemical called dopamine. Dopamine makes the brain and body feel pleasure. When the drug wears off, the dopamine drains out of the userâs system. This makes a person feel that the only way they can feel pleasure is by taking drugs.
In 1984, Apple debuted the operating system that is now known as the Classic Mac OS with its release of the original Macintosh System Software. The system, rebranded Mac OS in 1996, was preinstalled on every Macintosh until 2002 and offered on Macintosh clones for a short time in the 1990s.
By the time you read this, the latest version of Mac OS X â sorry â macOS, will be available to download from the App Store. macOS 10.12 Sierra, to give it its full title, finally sees Apple move away from the OS X nomenclature given to every version of its desktop operating system since 2001. Well, the answer is simple: the new naming convention brings it in line with Apple's other operating systems: iOS, watchOS and tvOS.